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Updated: Jul 11, 2025

Operant Protocols for Assessing the Cost-benefit Analysis During Reinforced Decision Making by Rodents
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Multi-attribute decision-making in macaques relies on direct attribute comparisons.

Aster Q Perkins, Zachary S Gillis, Erin L Rich

    Biorxiv : the Preprint Server for Biology
    |November 14, 2023
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    Summary
    This summary is machine-generated.

    Monkeys compare similar attributes, like sweetness or probability, when making value-based decisions. This attribute-specific comparison process challenges existing decision-making models and offers insights into cognitive functions.

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    Area of Science:

    • Neuroscience
    • Cognitive Science
    • Behavioral Economics

    Background:

    • Value-based decisions often involve multiple attributes (e.g., cost, quality).
    • Traditional decision-making models integrate attributes into a single utility value.
    • Behavioral anomalies suggest attribute-specific processing may occur.

    Approach:

    • Rhesus macaques performed a value-based decision task with sweetness and probability attributes.
    • Attribute mappings (bigger=better or bigger=worse) were manipulated.
    • Gaze patterns and choice accuracy were analyzed.

    Key Points:

    • Decision accuracy decreased when similar attributes had differing mappings.
    • Gaze patterns showed sequential sampling of similar attributes for comparison.
    • Unlike attributes with different mappings did not impair decision-making.

    Conclusions:

    • Value-based decisions involve direct comparison of similar attributes within multi-attribute options.
    • This challenges models relying solely on integrated utility.
    • Findings provide a foundation for understanding neural mechanisms of decision-making.